Turn sweat into energy. Marathon runners consume up to 97% of their energy to cool themselves, scientists have found. So that's where the cooling characteristics of the X-BIONIC® Running Shirt Speed especially come into play. The special construction of the Running Shirt,with its system of spacers, channels and depositories, means our sweat - our natural cooling system - can during physical exertion stay on the skin and evaporate. The 3D-BionicSphere® System on the chest and back optimises the cooling process, which is vital for retaining performance ability during running. Better cooling mean better performance!

Without giving the body the impression that it is getting cold, fresh air from the 3D-BionicSphere® System in the chest area cools down the body temperature. The air is tempered inside the ducts, working like a sluice. Hot, moist air is disposed of using the dynamics of body warmth and then replaced with new fresh air. 3D-BionicSphere® System on the back guarantees effective ventilation so moisture is quickly wicked and transported away. No sweat means insulating air pockets in the wavelike structure protect against cold.

SweatTraps® trap perspiration before you start to feel it. Sweat is wicked away so it can evaporate using heat dynamics. A film of perspiration - too thin to be noticeable - is left behind to cool the skin.

From 100,00 € order value the delivery inbound Germany is free of shipping costs. In case of cash on delivery (only inside Germany) we charge a cash on delivery fee of 3,50 EUR. Apart from the complete shipment price Deutsche Post AG charges an additional charge of 2,00 EUR for every cash on delivery.

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Please note that our provided times of delivery allow for a complete shipment and the delivery to the address provided by you. It also includes the time of sourcing your items in case they are out of stock. The provided time of delivery refers to a delivery within Germany. Deliveries to foreign countries means longer times of delivery.In the event of you ordering items with different times of delivery, please note that the order will leave our warehouse once complete. Choosing the payment method "Cash in advance" also prolongs the time of delivery. We will only ship your order once the full amount has been payed to our accounts and can be confirmed by our accounts department. Please note the extended delivery time for shipments outside of Germany. The notification "delivery date unknown" means, that the items might me out of stock or unreliable in terms of availability. In that case we do advise you to maybe choose another item out of the bike24 range. More regarding terms of delivery.